Portable grin



(N0 Model.)

EL WAAR n O. JAGUSOH.

PORTABLE @BINDING MILL.

No. 301,020. Patented June 24, 1884.

turen drames REINHOLD VAAK AND CARL JA Paritair tieren, Y

GUSCH, CF CHICAGC, ILLINOIS.

PORTABLE GRINDINGHVHLL.

SPECIFICATION forming part of Letters Patent No. 301,020, dated June 2a,1884. Application filed November 27, 1883. (No model.)

To @ZZ whom t may concern.-

Be it known that we, REINHOLD WAAK and CARL Jamison, subjects ofthe'Emperor of Germany, residing at Chicago, in the county 0f Cook andState of Illinois, have invented certain new and useful Improvements in.Portable Grinding-Mills, of which. the following is a specification,reference being had therein to the accompanying drawings.

Our invention relates to an improved grinding-mill; and the object ithas in viewis principally to improve the means employed for adapting-itfor use with different sizes of grain, and to reduce such grain todifferent degrees of fineness.

The invention consists of novel devices and combinations of devices, aswill be described and claimed.

Reference is made to the accompanying drawings, in which Figure l is aside view of the mill complete; Fig. 2, a vertical central section ofthe same, and Fig. 3 a plan with parts removed.

Like letters refer to like parts in each view.

A represents the base ofthe mill, upon vwhich are mounted the partswhich inclose the feed and grinding rolls. The inclosing-casing isformed of two parts-viz., a cylindrical rollcasing, B, and areceiving-hopper, B', securely bolted together, asshown. Casing B isprovided on one side, at its base, with extensions o, connected bycross-pieces b b', which rest upon the base A. Through the center ofthese cross-pieces b b, and through base A,are passed bolts c, screwthreaded on their upper ends, where they are provided with nuts d, andat their lower ends are secured to a yoke, e. Yoke c is provided with anupwardly-project. ing lug, which presses against the under side of baseA, and when the nuts cl of bolts c are screwed down tight this lugpresses against said base andserves to hold easing B and hopper B iirmlyin position. Elongated slots are formed through base A. for the passagetherethrough of bolts c, the object of which will be explained. Formedat or about the center of eross-piece b, is a bracket, g, in which ismounted a shaft, h, provided at its outer end with a hand-wheel, t', andat its inner end with a crank-arm, j, to the pin of which is attached arod, 7.1, which is attached at each end to the pin of a crank-arm, Z,which are secured to feedscrews m, each mounted and turning in suitableinternally screwthreaded bearings, m vm", on the sides of casing B, andthe boxes supporting the shaft of the grinding-roll D; The shaft of thisgrindingroll passes through elongated slots made in the ends of thecasing, and has end bearings jin the boxes EE, secured to thebase-frame.

By the arrangement of parts thus far described, it will be understoodthat by loosening the nuts d of the bolts c, and by turning l thehand-wheel t, motion will be imparted to I thecrankconnections andtransmitted to the feed -screws, which will move the casing B and itshopper backward or forward, the movement of the casing independently of'the grinding-roll being permitted bythe slots in the ends of saidcasing. The casing B is provided with a discharge -spout, C, whichpasses through an opening in base A, and upon one side of the innersurface of vsaid easing are formed the grinding-teeth a, which form oneof the grinding-surlftces in connection with the grinding-roll D. Itwill also be un derstood that by moving the partB backward or forwardthe teeth formed on theinterior of said casing are carried to or fromroll D, and the space left between the two grindingsurfaces thusdiminished y roll D, and also the one F, to be referred to, arepreferably made of steel, and the grinding-teeth with which they areprovided are formed like rasp-teeth. The journals of the upper roll, F,which is situated within the feed-hopper B', have bearings in the sidesof said hopper, and at one end project out sufciently to accommodate apulley, C, which is connected by cross-belting H with a pulley, G, D,whereby when power is applied to the roll D by means of hand-wheel I orpulley .I the upper roll is .revolved in the opposite direction to rollD. 'I'linged to the inner surface of hopper B is a strip, K, whichextends down to within a short distance of roll D, and acts as a guideto direct the grain between the teeth of said roll and those formed onlthe inside of casing B. To strip K is secured a or increased.4 Thesecured to the journal of the roll IOO screw which projects out throughthe side ol' the hopper, and is provided on its outer end with ahand-wheel, L. Secured to said screw, intermediate one side of thehopper B and strip K, is a sleeve, o, which adj oins said strip and atall times affords it a rest, the sleeve being fixed tothe screw to havesimultaneous movement with the strip K. It will be seen that by turningthe hand-wheel L the strip K is carried toward or Withdrawn from theroll F, and the space through which the grain is to pass thus diminishedin size-or enlarged.

The operation will be readily understood by those skilled in the art towhich the invention pertains.

Vhat We claim isl. In a grinding-mill, an adjustable casing andfeed-hopper, the former provided on its inner surface with atoothedsection, in combination With feed and grinding rolls, and means forrevolving said rollsfor regulating the feed and for adjusting. thecasing with respect to the/ grinding-roll, as and for the purposedescribed. p

2. rlhe casing B, )rovided with toothed section n, and hopper B',provided With plate K, in combination with rolls DF, means for ad:justing casing B with respect to roll D, means for adjusting plate Kwith respect to roll F, and means for revolving said rolls, as describedand shown.

3. The casing B, provided With toothed section n, in combination withbracket g., hand- Wheel i, shaft 7L, rod 7c, cranks lj, screws m, andsuitable bearings on the casing and roller boxes, as and for the purposeset forth.

In testimony whereof We affix our signatures in presence oi' twoWitnesses.

REINHOLD VAAK. CARL JAGUSCH.

-Witnesses: A

M. J. CLooUnT, Louis NOTHING.

